What is the process of machining mechanical parts?

The main content of Changzhou mechanical parts processing technology In modern society, the machining of parts is generally processed in the form of numerical control. Therefore, when processing parts, it is necessary to first understand the relevant processing technology and formulate suitable Machining plan, in-depth research and analysis of CNC machining process of parts. First of all, when CNC machining of parts, it is necessary to choose a suitable CNC machine tool, work on the CNC machine tool, and determine what the processing process is. Then formulate an appropriate machining plan for CNC machining of parts, analyze the drawings of the parts to be machined, process the parts and use appropriate machining techniques. In the processing of mechanical parts, the most important thing is to design the process of parts processing, which is related to the quality of the parts. We need to know the steps of part processing procedures, the selection of benchmarks, the selection of processing tools, the selection and installation of fixtures and The processing strategy and process parameters are determined to formulate the most suitable processing technology. In addition, we need to compile and inspect the numerical control programming program of mechanical parts processing, control programming errors, and improve programming quality and efficiency.

Features of the machining process of mechanical parts The machining of mechanical parts is generally carried out in the form of numerical control, so it is inevitable to have the characteristics of numerical control machining, but also has its own characteristics.

(1) CNC machining of parts requires that the content of the machining process be detailed and specific. When CNC machining the parts, the CNC machining plan will be formulated in advance, and then operated on the CNC machine tool, including the machining program, the selected tool, the machining method and the corresponding machining parameters, etc. These require the machining of the parts. There must be a specific and detailed plan, the plan is analyzed, and then the machining program of the part is formed.

(2) The CNC machining process requirements of parts are more strict and precise. The CNC machining mode is adopted for the machining process of mechanical parts, which makes the machining of parts with higher precision and better quality, and does not require too many people during the machining process, saving manpower, but on the other hand, human intervention The reduction of the number of parts makes it impossible to artificially adjust the parts if there is a problem in the process of processing. Therefore, the setting of the mechanical CNC machining process of the parts should be more precise and accurate, and there should be no small errors, because the existence of errors is very likely It will cause the processing technology to fail to meet the standard and cause the parts to be discarded, and even cause mechanical accidents.

(3) When performing mechanical numerical control processing on parts, it is necessary to perform mathematical calculations on the graphics of the parts, and perform mathematical calculations on the set values u200bu200bof the programmed dimensions. Because the machining of the parts is carried out in the numerical control mode, programming and design must be carried out before machining, the geometric model of the size of the part, and the mathematical calculation of the size of the part to be machined, so it is necessary to comprehensively consider all aspects when programming. to optimize the design of the parts.

Second, analysis of the principle of machining process design of mechanical parts

The principle of positioning datum selection The positioning datum refers to the relative relationship of the parts to the machine tool and the tool when machining the parts. The surface of the position, and the original unprocessed surface is used for the part during the initial processing, which is the rough datum. If the processed positioning datum is used after the original processing, this is the fine datum. . Then when processing mechanical parts, what surface should be selected as the positioning reference, which must be carefully considered when processing parts. What kind of positioning datum is selected will affect the quality of parts processing and the complexity of the machine tool fixture structure. So what are the principles for choosing rough benchmarks and fine benchmarks?

The principle to follow when selecting the rough datum When selecting the rough datum to process the part, it is necessary to ensure that the material is sufficient, the machined surface has sufficient allowance, and the size of the machined surface on the side of the part that is not machined and location to meet the requirements of the processing drawings. If a rough datum is selected, it is necessary to ensure that the surface of the part is easy to locate, easy to clamp and process, and that the selected fixture is as simple as possible. When selecting the rough datum, be sure to determine the machined surface and the unmachined surface, and have an accurate position selection. Generally, the unmachined surface is used as the rough datum. When selecting the rough datum, it is generally to satisfy the important surface that the roughing allowance is small and uniform. When selecting the unmachined surface, the position error of the rough datum can be evenly distributed on the unmachined surface, and the rough datum surface is as far as possible. It may be flat and complete, without gaps, which is conducive to setting the position.

Principles to follow when selecting a fine datum When selecting a fine datum, first observe whether the fine datum surface is convenient for positioning and clamping, and if a certain surface is selected as the fine datum, other surfaces can be selected. The positioning method of the selected surface is uniformly used to improve the processing efficiency, so careful consideration should be given when positioning the precise surface. The fine datum adopts the principle of precise coincidence, that is, the positioning and finishing of other surfaces are carried out using a unified positioning principle.

Principles for the selection of part surface processing methods For different part surfaces and different parts processing requirements, parts structure characteristics, material properties, etc., it is necessary to select a suitable processing method to process the part surface. When determining the part processing method, generally first determine the processing method after the part Z, and then deduce the processing method of the previous related processes from the back to the front.

Dongguan Yifeng Metal Co., Ltd. have expanded from facilitating conversation and collaboration in the identity industry to providing strategy consulting services, research, analytics and education.
Dongguan Yifeng Metal Co., Ltd. has been a leading server of for many years. Visit the website Dongguan Yifeng Metal Co., Ltd. for quality custom metal parts.
Armed with professional team and advanced equipment, Dongguan Yifeng Metal Co., Ltd. is specialized in offering high quality in various designs. Visit us at Dongguan Yifeng Metal Co., Ltd. to find your desired .